Spalling occurs when there is water within concrete, brick or natural stone and the water forces its way to the surface. This can cause peeling, popping out and even flaking of the top layer of the medium. This water might also include salt, increasing the speed of the spalling. This is something that can commonly occur in a home that has a basement that is often damp. It can happen to the brick of fireplaces that are not used, the wall of the foundation in the basement of a home and even in concrete flooring in the basement or other parts of the home if it is damp.
Spalling is something that you want to look for if you are purchasing a property. Over a long period of time spalling can cause permanent damage to the area, possibly causing walls to crumble and break apart. This can be a serious structural issue if left untreated. Hiring a professional to cut out the areas of spalling and administer new concrete over the area to replace the areas where the spalling occurred. Once the damage has been fixed, it is important to make sure the area stays free from humidity. There are several dehumidifying devices that can be purchased to do the job. You can also find some simple ways to keep moisture out of the air in the basement such as keeping cat litter in the room.